<template>
  <!-- 登录页面的整体盒子 -->
  <div class="login-container">
    <!-- 登录的盒子 -->
    <div class="login-box">
      <!-- 标题的盒子 -->
      <div class="title-box"></div>
      <!-- 登录的表单区域 -->
      <el-form :model="logForm" :rules="logRules" ref="logRef">
        <el-form-item prop="username">
          <el-input
            v-model="logForm.username"
            placeholder="请输入用户名"
          ></el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input
            v-model="logForm.password"
            placeholder="请输入密码"
          ></el-input>
        </el-form-item>
      </el-form>
      <el-button class="log-btn" type="primary" @click="login">登录</el-button>
      <el-link type="info" @click="this.$router.push('/reg')">去注册</el-link>
    </div>
  </div>
</template>

<script>
import { Message } from "element-ui"

export default {
  name: "login",
  data() {
    return {
      logForm: {
        username: "",
        password: "",
      },
      logRules: {
        username: [
          // 必填校验
          { required: true, message: "请输入用户名", trigger: "blur" },
          {
            pattern: /^[a-zA-Z0-9]{1,10}$/,
            message: "用户名必须是1-10位的字母数字",
            trigger: "blur",
          },
        ],
        password: [
          { required: true, message: "请输入密码", trigger: "blur" },
          {
            pattern: /^\S{6,15}$/,
            message: "密码必须是6-15位的非空字符",
            trigger: "blur",
          },
        ],
      },
    };
  },
  methods: {
    // 登录
    login() {
      // 表单预校验
      this.$refs.logRef.validate(async (valid) => {
        if(valid) {
          // 验证通过 
          // 发起登录请求
          const{data:res }= await this.$http.post('/api/login', this.logForm)
          console.log(res);
          if(res.code === 0) {
             // 跳转到首页
            this.$router.push('/main')
            // 提示用户 登录成功
            this.$message.success(res.message)
          }else {
            //  提示用户 失败
            this.$message.error(res.message)
          }
        }
      })
    }
  }
};
</script>

<style lang="less" scoped>
.login-container {
  background: url("../../assets/images/login_bg.jpg") center;
  background-size: cover;
  height: 100%;

  .login-box {
    width: 400px;
    height: 270px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    padding: 0 20px;
    box-sizing: border-box;

    .title-box {
      height: 60px;
      background: url("../../assets/images/login_title.png") center no-repeat;
    }

    .log-btn {
      width: 100%;
    }
  }
}
</style>